commonwealth lng


LNG: Rethought, Retooled and Reimagined

Commonwealth LNG is an 9.3 mtpa nameplate (9.5 mtpa permitted) LNG liquefaction and export facility located on the west bank of the Calcasieu Ship Channel at the mouth of the Gulf of Mexico near Cameron, Louisiana. The facility will have six 50,000 M3 modular storage tanks and will be able to accommodate vessels up to 216,000 M3. Gas supply is achieved with the addition of a 3.0-mile pipeline interconnected to two major pipeline systems with significant excess transportation capacity.

Our approach

Commonwealth’s engineering-focused approach features a highly modularized methodology, designed to streamline schedule and reduce capital costs.

The advantages of the modular approach are especially important in Southwest Louisiana. The area is the epicenter of U.S. LNG production, so the competition for construction labor and other required resources can be challenging.

Through modularization, Commonwealth can move more than ten million workhours out of the field and into fabrication shops. This reduces field construction of the Commonwealth project to an average of less than 800 full time equivalent workers per month and less than 2,000 personnel during the peak of the three-year construction schedule.

A typical field-built project of similar size would require a peak labor force of 8,000 to 10,000. Reducing the onsite labor force also reduces the strain on the local community’s need for additional police force, temporary infrastructure, and support.

Facility Video Tour

The Modular Approach

Key relationships

Commonwealth LNG’s project in Cameron, Louisiana is supported by some of the industry’s leading suppliers of engineering, construction and professional project support services.

Engineering, Procurement and Construction

Technip Energies
Air Products

Baker Huges
Primoris On Quest


Financial and Legal

Primary Council:

King & Spalding







Commonwealth received FERC authorization on Nov. 17, 2022. Preliminary site work is planned to begin in the second half of 2023, with official FID targeted for Q1’24. Using a highly modularized approach will enable the company to build the facility in 36 months, allowing commercial operations to begin in 2027.

Q2 2021

Final FERC Data Submittal

Q2 2022

Close on Development Funding

Q4 2022

Full FERC Approval Received

Q4 2023

Completion of FEED / LSTK Contract and Financial Close

Q1 2024

Start of Construction


Commercial Operations Begin